The backend of Landstead and the Backend of Apostille are very similar actually.  I would call them cousins and they both stem from a different and even more broad idea I have.  The reason why I think Landstead is doing so well is that while more than 100 projects on Ethereum have "talked" about building identity systems on Ethereum, very few actually delivered.  And Landstead not only did that but also government assets, and even registered property and property transfers between citizens.  To my knowledge this is the most advanced demo I have seen like that. 

The problem with Apostille is sooooo many people have done PoE so Apostille gets over looked as just another PoE; it in fact is the most advanced PoE system I have ever seen by far, but people don't give it enough time to see it and it gets lost in the sea of all the other PoE systems.  Whereas Landstead is definitely one of the firsts of its kind. 

One funny thing is our competition was building projects on Ethereum for literally months.  But we did Landstead in under a week!